To ensure long-term performance, CFKS selects materials based on the specific mechanical stresses of your application. We prioritize high-grade Polyurethane or NBR/FKM compounds known for their high tensile strength and tear resistance. While PU offers superior abrasion resistance for heavy-duty construction machinery, FKM variants are utilized for high-heat environments or where aggressive synthetic fluids are present. These materials are compounded to maintain elasticity throughout the temperature range, preventing the “setting” or hardening that typically leads to leakage in standard seals.

Achieving maximum seal life requires meticulous attention to the installation environment. The UR seal is designed for durability, but the sealing lip remains vulnerable to nicks or stretching during the press-fit process. We recommend using tapered installation tools to guide the seal over rod threads and grooves, ensuring the lip does not roll or twist. During routine maintenance, inspect the cylinder bore for scoring; even minor surface defects can compromise the anti-extrusion barrier. Regular lubrication with a compatible hydraulic fluid prior to installation is essential to minimize start-up friction and thermal degradation.